<template>
  <div class="loginContainer">
    <div class="loginInner">
      <div class="login_header">
        <h2 class="login_logo">小羊外卖</h2>
        <div class="login_header_title">
          <a
            href="javascript:;"
            :class="{ on: loginWay }"
            @click="loginWay = true"
            >短信登录</a
          >
          <a
            href="javascript:;"
            :class="{ on: !loginWay }"
            @click="loginWay = false"
            >密码登录</a
          >
        </div>
      </div>
      <div class="login_content">
        <form @submit.prevent="login" >
          <div :class="{ on: loginWay }">
            <section class="login_message">
              <input
                type="tel"
                maxlength="11"
                placeholder="手机号"
                v-model="phone"
              />
              <button
                :disabled="!rightPhone"
                class="get_verification"
                :class="{ right_phone: rightPhone }"
                @click.prevent="getCode"
              >
                {{ computeTime > 0 ? `已发送(${computeTime}s)` : "获取验证码" }}
              </button>
            </section>
            <section class="login_verification">
              <input type="tel" maxlength="8" placeholder="验证码"   v-model="code"/>
            </section>
            <section class="login_hint">
              温馨提示：未注册硅谷外卖帐号的手机号，登录时将自动注册，且代表已同意
              <a href="javascript:;">《用户服务协议》</a>
            </section>
          </div>
          <div :class="{ on: !loginWay }">
            <section>
              <section class="login_message">
                <input
                  type="text"
                  maxlength="11"
                  placeholder="手机/邮箱/用户名"
                  v-model="name"
                />
              </section>

              <section class="login_verification">
                <input type="password" maxlength="8" placeholder="密码" v-if="!showPwd" v-model="pwd" />
                <input type="text" maxlength="8" placeholder="密码" v-else v-model="pwd" />

                <div class="switch_button " :class="showPwd ? 'on':'off' "  @click="showPwd=!showPwd">
                  <div class="switch_circle" :class="{right:showPwd}"></div>
                  <span class="switch_text">{{showPwd? 'abc' : '...'}}</span>
                </div>
              </section>
              <section class="login_message">
                <input type="text" maxlength="11" placeholder="验证码" v-model="captcha" />
                <img
                  class="get_verification"
                  src="http://localhost:4000/captcha"
                  alt="captcha"
                 @click="getCaptcha" ref="captchas" />
              </section>
            </section>
          </div>
          <button class="login_submit">登录</button>
        </form>
        <a href="javascript:;" class="about_us">关于我们</a>
      </div>
      <a href="javascript:" class="go_back" @click="$router.back()">
        <i class="iconfont icon-jiantou2"></i>
      </a>
    </div>
    <AlertTip :alertText='alertText' v-show="AlertShow" @closeTip='closeTip'/>
  </div>
</template>

<script>
import AlertTip from '../../components/AlertTip/AlertTip.vue'
import {reqPwdLogin,reqSendCode,reqSmsLogin} from '../../api/index'

export default {
  data() {
    return {
      loginWay: true, // true 代表短信登录，false 代表密码登录
      computeTime: 0, //计时时间
      showPwd:false,//是否显示密码
      phone: "", //手机号码
      pwd:'',//密码
      code:'', //短信验证码
      name:'',//用户名
      captcha:'',//图形验证码
      alertText:'',//提示文本
      AlertShow:false,//是否显示警告文本
    };
  },
  computed: {
    rightPhone() {
      return /^1\d{10}$/.test(this.phone);
    },
  },
  methods: {
    //异步获取验证码
   async getCode() {
      //如果没有倒计时
      if (!this.computeTime) {
        //启动倒计时

        this.computeTime = 30;
        const IntervalId = setInterval(() => {
          this.computeTime--;
          if (this.computeTime <= 0) {
            //停止计时
            clearInterval(IntervalId);
          }
        }, 1000);
        //发AJAX请求（向指定手机号发送验证码短信）
       const result=await reqSendCode(this.phone)
       if(result.code===1){
        //显示提示
         this.showAlert(result.msg)

        //停止倒计时
        if(this.computeTime){
          this.computeTime =0;
          clearInterval(IntervalId)
          this.IntervalId=undefined
        }
       }
          
        
      }
    },

    showAlert(alertText){
      this.AlertShow=true,
      this.alertText=alertText
 },
 //关闭警告框
 closeTip(){
  this.AlertShow=false,
      this.alertText=''
 },
 //获取一个新的图片验证
        getCaptcha(){
          //每次指定的src值不一样
          this.$refs.captchas.src = 'http://localhost:4000/captcha?time='+Date.now()
          
        },
 
    //异步登录
   async login(){
    let result
       //前台表单验证
       //判断登录方式
       if(this.loginWay){//短信登录
             const {rightPhone,phone,code}=this;
             if(!rightPhone){
               //提示手机号不正确
              this.showAlert('手机号不正确')
              return
              }else if(!/^\d{6}$/.test(code)){
                     //提示验证码必须是六位数字
                     this.showAlert('验证码必须是六位数字')
                     return
              }
              //发送AJAX请求短信登录
// import {reqPwdLogin,reqSendCode,reqSmsLogin} from '../../api'

               result= await reqSmsLogin(phone,code)
        


      
       }else{//密码登录
       const {name,pwd,captcha } = this
       if(!name){
         //用户名必须指定
         this.showAlert('用户名必须指定')
         return
       }else if(!pwd){
          //密码必须指定
          this.showAlert('密码必须指定')
          return
       }else if(!captcha){
         //验证码必须指定
          this.showAlert('验证码必须指定')
          return
       }
       //发送AJAX请求密码登录
               result= await reqPwdLogin({name,pwd,captcha})
         
          

       }
          //停止倒计时
        if(this.computeTime){
          this.computeTime =0;
          clearInterval(this.IntervalId)
          this.IntervalId=undefined
        }

       //根据结果数据处理
              if(result.code===0){
                     const user=result.data
                     //1 将user 保存到 VUEX的state中
                     this.$store.dispatch('recordUser',user)
                     //2 跳转路由 去个人中心页面
                     this.$router.replace('/profile')
                     
              }else{
                    const msg=result.msg
                    this.showAlert(msg)
                    this.getCaptcha()

              }

    }
  },
  components:{
    AlertTip
  }

};
</script>


<style lang="scss">
.loginContainer {
  width: 100%;
  height: 100%;
  background: #fff;
}
.loginContainer .loginInner {
  padding-top: 60px;
  width: 80%;
  margin: 0 auto;
}
.loginContainer .loginInner .login_header .login_logo {
  font-size: 40px;
  font-weight: bold;
  color: #02a774;
  text-align: center;
}
.loginContainer .loginInner .login_header .login_header_title {
  padding-top: 40px;
  text-align: center;
}
.loginContainer .loginInner .login_header .login_header_title > a {
  color: #333;
  font-size: 14px;
  padding-bottom: 4px;
}
.loginContainer .loginInner .login_header .login_header_title > a:first-child {
  margin-right: 40px;
}
.loginContainer .loginInner .login_header .login_header_title > a.on {
  color: #02a774;
  font-weight: 700;
  border-bottom: 2px solid #02a774;
}
.loginContainer .loginInner .login_content > form > div {
  display: none;
}
.loginContainer .loginInner .login_content > form > div.on {
  display: block;
}
.loginContainer .loginInner .login_content > form > div input {
  width: 100%;
  height: 100%;
  padding-left: 10px;
  box-sizing: border-box;
  border: 1px solid #ddd;
  border-radius: 4px;
  outline: 0;
  font: 400 14px Arial;
}
.loginContainer .loginInner .login_content > form > div input:focus {
  border: 1px solid #02a774;
}
.loginContainer .loginInner .login_content > form > div .login_message {
  position: relative;
  margin-top: 16px;
  height: 48px;
  font-size: 14px;
  background: #fff;
}
.loginContainer
  .loginInner
  .login_content
  > form
  > div
  .login_message
  .get_verification {
  position: absolute;
  top: 50%;
  right: 10px;
  transform: translateY(-50%);
  border: 0;
  color: #ccc;
  font-size: 14px;
  background: transparent;
  &.right_phone {
    color: black;
  }
}
.loginContainer .loginInner .login_content > form > div .login_verification {
  position: relative;
  margin-top: 16px;
  height: 48px;
  font-size: 14px;
  background: #fff;
}
.loginContainer
  .loginInner
  .login_content
  > form
  > div
  .login_verification
  .switch_button {
  font-size: 12px;
  border: 1px solid #ddd;
  border-radius: 8px;
  transition: background-color 0.3s, border-color 0.3s;
  padding: 0 6px;
  width: 30px;
  height: 16px;
  line-height: 16px;
  color: #fff;
  position: absolute;
  top: 50%;
  right: 10px;
  transform: translateY(-50%);
}
.loginContainer
  .loginInner
  .login_content
  > form
  > div
  .login_verification
  .switch_button.off {
  background: #fff;
}
.loginContainer
  .loginInner
  .login_content
  > form
  > div
  .login_verification
  .switch_button.off
  .switch_text {
  float: right;
  color: #ddd;
}
.loginContainer
  .loginInner
  .login_content
  > form
  > div
  .login_verification
  .switch_button.on {
  background: #02a774;
}
.loginContainer
  .loginInner
  .login_content
  > form
  > div
  .login_verification
  .switch_button
  > .switch_circle {
  position: absolute;
  top: -1px;
  left: -1px;
  width: 16px;
  height: 16px;
  border: 1px solid #ddd;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 2px 4px 0 rgba(0, 0, 0, 0.1);
  transition: transform 0.3s;
  &.right{
    transform:translateX(26px);
  }
}
.loginContainer .loginInner .login_content > form > div .login_hint {
  margin-top: 12px;
  color: #999;
  font-size: 14px;
  line-height: 20px;
}
.loginContainer .loginInner .login_content > form > div .login_hint > a {
  color: #02a774;
}
.loginContainer .loginInner .login_content > form .login_submit {
  display: block;
  width: 100%;
  height: 42px;
  margin-top: 30px;
  border-radius: 4px;
  background: #4cd96f;
  color: #fff;
  text-align: center;
  font-size: 16px;
  line-height: 42px;
  border: 0;
}
.loginContainer .loginInner .login_content .about_us {
  display: block;
  font-size: 12px;
  margin-top: 20px;
  text-align: center;
  color: #999;
}
.loginContainer .loginInner .go_back {
  position: absolute;
  top: 5px;
  left: 5px;
  width: 30px;
  height: 30px;
}
.loginContainer .loginInner .go_back > .iconfont {
  font-size: 20px;
  color: #999;
}
</style>